Home / 143,648.37-198,234.63-79,118.06

Finding the Fourth Proportional to 143,648.37, 198,234.63 and 79,118.06

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Solution

The fourth proportional to 143,648.37, 198,234.63 and 79,118.06 is: 109,182.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,648.37 : 198,234.63 = 79,118.06 : x
  2. Step 2: Convert to fraction form
    143,648.37/198,234.63 = 79,118.06/x
  3. Step 3: Cross multiply
    143,648.37x = 198,234.63 × 79,118.06
  4. Step 4: Simplify right side
    143,648.37x = 15,683,938,359.24
  5. Step 5: Solve for x
    x = 15,683,938,359.24/143,648.37
  6. Step 6: Final answer
    x = 109,182.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.